Power-transmitting device.



PATENTED JULY 7, 1908.

G. E. DEAN. POWER TRANSMITTING DEVICE.

APPLICATION FILED JULY 17,1905. y

2 SHEETS-SHEET 14 'wil/Ill) i LEA `mlll llmlln PATENTD JULY 7, 1908.

E. E. DEAN. POWER TEANSMITTING DEVICE.

APEEIDATIDN FILED JULY 17, 1905.

' z SHEETS-SHEET 2.

I C2, C3, C1 and C5.

GEORGE R. DEAN, OF CHICAGO, ILLINOIS.

POWER-TRANSMITTIN G DEVICE.

Specification of Letters Patent.

Patented July 7, 190s.

Application filed July 17, 1905. Serial No. 269,912.

To all whom fit may concern:

Be it known that I, GEORGE R. DEAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Power Transmitting Devices, of which the following is a specification.

My invention relates to power transmitting apparatus and has for its obj ect to provide new and im roved constructions in apparatus of that c ass.

The invention is illustrated in the accompanying drawings wherein Figure 1 is a vertical section through one form of apparatus,- Fig. 2, a vertical section on line 2 2 of Fig. l Fig. 3, a section on line 3 3 of Fig. l; Fig. 4, a section on line 4 4 of Fig. 1 Fig. 5, a view similar' to Fig. 1 of a modified form of ap aratus, and Fig. 6, a sec: tion on line 6 6 o Fig. 5.

Like letters of reference indicate like parts in all the drawings.

Referring particularly to Figs. l to 4 inclusive, A represents the supporting frame of the apparatus Which may be suspended from the ceiling A1 in` any desired manner. The frame A has the bearing parts A2 for the driving shaft B and the driven shaft C and a hanger A3 terminating in the block D of peculiar construction which forms a bearing for the transmitting wheel E. At intervals along the driving shaft B, and rigidly thereon, are the beveled driving wheels B1, B2, B3, B4, B5. In the construction here shown, these are gear Wheels, and there may be any number of them. On the driven shaft C are the correspondingly placed gear wheels C1, The gear wheels of the two shafts are, therefore, arranged in pairs so las to be engaged by the beveled transmitting gear wheel E, the small gear wheel B1 on the driving shaft thus transmitting motion to the large wheel C5 on the driven shaft, the gear B2 similarly connected with the gear C, etc. Thus the speed transmitted from B to C may be varied to a very oonsiderable extent. The gears B1, B2, C1, C2, etc. will, of' course, have different bevels aocording to their diameters and the diameter of the transmitting gear E, and this makes it necessary that the gear wheel E should be capable of dis lacement along the direction of its axis, anc also that it should be swung from side to side. To accomplish this result, I have provided the bearing block D. The

l i l block is, generally speaking, in the form of a triangular prism. llhe block is hollow and at its top, that is, at the base of the prism, it has the rim formed with pairs of rectangular projections D1, D2, D3, D4, and D5, there being a pair of such projections for each pair of gear Wheels on the shafts B and C, that is, to support the gear wheel E in each of its various positions.` In Figs. l to 8 inclusive, the gear wheel is shown in its central position and supported on the projections D3. Below the projections D1, D2, etc., the sides of the block D are thickened so as to close the opening through the block except for a central slot. This slot is made up of narrow straight portions D6 D arranged alternately with the wider circular portions D7 D2. Below this portion of the block the opening therethrough is again enlarged so as to form pairs of shoulders D2, D, D10, D11 and D12 parallel with and equidistant from the bearmg surfaces of the rectangular projections D1, D2, ctc., on the upper rim of the block. The o ening through the block D is contractec at the bottom of the block by turning inward the sides, as shown at D13 D13.

The gear wheel E is mounted so as to be rotated on a shaft F carrying a collar F2 secured thereto by the pin F 3 and provided vwith a pair of side lugs F1 F1. The collar F2 forms a bearing for the hub of the gear 'wheel E, the lugs F1 F 1 resting on the projections D1, D2, etc. on the rim of the block according to the position of the gear wheel. The shaft F is cut out to form the flattened portion F5 for some distance adjacent to the place where it passes through the slot formed by the openings D, D7 and is made with the slot FG. The slot has a bore to receive the screw threaded stem G which takes into a jam block G1 extending cross-wise through and projecting beyond the slot F6 in the shaft. The jam block G1 is smaller than thc slot F2 so that it may have longitudinal movement therein. The stem G terminates in the hand wheel G2 and is kept from longitudinal movement by the collar G3 and the cap piece G4, screwed onto the end of the shaft F. The shaft F has the collar F7 with the spokes F8 F8 for a hand grip.

To illustrate the operation of the apparatus, it will be assumed that the parts are in the positions shown in Figs. l to 4 inclusive, that is, with the transmitting gear wheel in engagement with the gears B3, C3. The speeds of the shafts will now, of course, be

' block D and has equal. If it is desired to increase the speed of the driven shaft C, it will be necessary to incline the axis of the gear Wheel E toward the right, bringing the wheel into engagement, say, with the gears B4, C2. To do this the hand wheel G2 is turned, lowering the jam block G1. The shaft F is then turned 90o by means of the handles F8 F8, thus of course, rotating the lugs F4 F4 on the collar F2 so that they extend lengthwise of the opening between the pairs of lugs D1, D2, etc., and also turning the flattened portion F5 of the shaft into alinemeiit with the straight slots D6 D6. The gear wheel may now be lowered slightly so as to free its teeth from the teethA of the wheels B3, C3 and it may then be swung to the right on the inturned portion D12 D12 of the side of the block as a bearing, until the bevel on the wheel E comes into alinement with the wheels B4, C2. The wheel E is then forced upwardly into engagement with these gears, the shaft turnedback 900, the flattened portion F5 turning in one of the circular apertures D7, and the lugs F4 F4 engaging with and resting upon the pair of projections D2 on the rim of the block. The jam block D1 may then be screwed up against the shoulder D2.

InFig. 5, l have shown a modified form of transmitting apparatus where friction pulleys are substituted for toothed gear wheels. This construction involves some minor changes, although the construction and op. eration are substantially the same as in the apparatus just described. The driving shaft B is provided witha series of these friction pulleys and the driven shaft C with a like series these pulleys,indicated generally by the lettersHH, being in arrangement and general form similar to the gear wheels except that their perimeters are smooth. Preferably they will be made of some material which. will insure a good grip on the bearing surface of the transmission pulley. The transmission pulley J will, of course, also have a beveled, smooth bearing surface and this pulley is mounted so as to rotate upon the shaft J1, having a fixed collar J2 at the end for a stop,

and a sliding bearing collar J 3 pressed by the spiral spring J4 which abuts against the collar J 5 secured to the shaft by the pin J 1 and having the side lugs J7 J7. The shaft J is cut out to form the flattened part J 8 and is provided l with the hand grip J 2. This shaft extends through the block K which is similar to the the projections K1 K1 preferably depressed in the center as shown. The hollow of the block is also bridged similarly to the block D and through this bridge is a slot formed by successive straight portions K2 K2 and the circular portions K3 K3. By' pressing upward on the hand grip J 9, the lugs J7 are carried out of the depressed part of the projections K1 and the shaft may then be turned so as to bring the lugs into the hollow portion of the block. The shaft may then be swung to the right or left to increase or decrease the speed, pushed in or out, and then turned so that the lugs engage with the proper projections. The tension of the spring J 4 will hold the parts in proper position and give the desired intimacy of contact between the bearing surfaces.

I have thus described two forms of construction embodying my invention, but it will be obvious that there might be considerable change in form, construction and arrangement of parts without departing from the spirit of my invention. I, therefore, do not limit myself to the particulars shown, but desire that the drawings be talienas in a sense diagrammatic although illustrating practical, mechanical embodiments of the invention.

I claim:

l. In power transmitting apparatus, the combination of a driving device with a driven device and a transmitting mechanism interposed between the same comprising a bearing block, a shaft extending through such block, and a wheel on the shaft, such block provided with a plurality of bearing parts upon which the shaft may be held in its various positions.

2. In power transmitting apparatus, the combination of a driving device with a driven device and a transmitting mechanism interposed between the same, comprising a bearing block, a shaft extending through such block, a wheel on the shaft, such block provided with a plurality of bearing parts upon which the shaft may be held in its various positions, and means for holding the parts in operative position.

3. In power transmitting combination of a driving apparatus, the device, with a driven device and a transmitting mechanism interposed between the same comprising a bearing block, a shaft extending through such block and adapted to be swung on a part thereof as a fulcrum, and a wheel on the shaft, such block provided with a plurality of bearing parts at different distances from such pivot and upon which the shaft is held in its various positions.

GEORGE R. DEAN.

Vitnesses:

HOMER L. KRAFT, PEncivAL W. TRUMAN. 

